09239+2754 STT 201 AB (HD 81027)

 
 
09h 23m 54.55s +27° 53' 54.9" P.A. 206.00 sep 1.4 mag 8.48,9.48 Sp F5 dist. 156.25 pc (509.69 l.y.)
 
 
Coord 2000 09239+2754 Discov num STT 201 Comp AB Coord arcsec 2000 09 23 54.55 +27 53 54.9
Date first 1844 Date last 2017 Obs 97
Pa first 225 Pa last 206.1 P.A. Now (θ) 206.1°
Sep first 1.2 Sep last 1.373 Sep. Now (ρ) 1.373"
Mag pri 8.48 Mag sec 9.48 delta mag (ΔM) 1 Spectral class F5 (yellow-white)
Pri motion ra -005 Sec motion ra -005
Pri motion dec -040 Sec motion dec -040
Notes O (Orbital solution)
This double is physical.
 
 
09239+2754 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 81027 09 23 55 +27 53 55 STT 201 AB 2017 97 206 1.4 8.48 9.48 1.00 Y <===
Show 09 23 55 +27 53 55 STT 201 AC 2015 10 317 34.0 8.48 13.01 4.53
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 81027 Constellation Leo HIP 46088 Tycho2 1958-01602-1
Gaia DR2 695286730560737664 HD 81027 ADS 7344 BD BD+28 1745
Distance 156.25 Distance ly 509.69
 
 
ORBITAL ELEMENTS
 
 
Period (P)1883y± 170 Periastron (T)2288y± 32.3 Semi-major axis (a)1.392a± 0.087
Eccentricity (e)0.274± 0.046 Inclination (i)140.3°± 2.9 Longitude of periastron (ω)268.2°± 15.2
Node (Ω)29.4°± 5.5 Notes ReferencePkO2018b
Equinox Last observation Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 207.3 1.260
2001 207.1 1.258
2002 207.0 1.257
2003 206.8 1.255
2004 206.6 1.254
2005 206.4 1.253
2006 206.3 1.251
2007 206.1 1.250
2008 205.9 1.248
2009 205.7 1.247
2010 205.6 1.245
2011 205.4 1.244
2012 205.2 1.242
2013 205.0 1.241
2014 204.8 1.239
2015 204.7 1.238
2016 204.5 1.236
2017 204.3 1.235
2018 204.1 1.233
2019 203.9 1.231
2020 203.8 1.230
2021 203.6 1.228
2022 203.4 1.227
2023 203.2 1.225
2024 203.0 1.224
2025 202.9 1.222
2026 202.7 1.220
2027 202.5 1.219
2028 202.3 1.217
2029 202.1 1.216
2030 201.9 1.214


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds09239%2B2754a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic